How to Invoke Search in Windows Help from Visual Basic ProgramLast reviewed: June 21, 1995Article ID: Q86771 |
The information in this article applies to:
- Standard and Professional Editions of Microsoft Visual Basic for Windows, version 2.0- Microsoft Visual Basic programming system for Windows, version 1.0 - Microsoft Windows versions 3.0 and 3.1
SUMMARYYou can invoke the Search feature of the Windows version 3.0 and 3.1 Help engine from a Visual Basic program. To do this, call the Windows API function WinHelp and pass the constant HELP_PARTIALKEY (&H105) as the wCommand parameter and any string that is a NON-valid topic as the dwData parameter.
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Step-by-Step Example1. Start Visual Basic or from the File menu, choose New Project (ALT, F, N)if Visual Basic is already running. Form1 is created by default. Global Const HELP_PARTIALKEY = &H105 ' Enter the following Declare statement entirely on one, single line. Declare Function WinHelp Lib "User"(ByVal hWnd As Integer, ByVal lpHelpFile As String, ByVal wCommand As Integer, ByVal dwData As Any) As Integer
Sub Form_Click () DummyVal$ = "" ' Enter the following function call entirely on one, single line: Temp% = WinHelp(Form1.hWnd, "c:\Windows\winhelp.hlp", HELP_PARTIALKEY, DummyVal$) End Sub
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Additional reference words: 1.00 2.00
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